XML Save to file Javascript asp

I need help writing and saving to a xml file. I am trying to use the code below. If anybody can help would be great. This code below loads the XML file and displays it on a page. Anybody know how i can save to it? Many thanks.

We are building a project based on classic ASP.

<%@language=JScript%>

<%
   var objSrvHTTP;
   objSrvHTTP = Server.CreateObject ("Msxml2.ServerXMLHTTP.6.0");
   objSrvHTTP.open ("GET","http://ift.tt/UY12y4", false);
   objSrvHTTP.send ();
   Response.ContentType = "text/xml";
   Response.Write (objSrvHTTP.responseXML.xml);
%>